1. In your own words, define the term clustering based on search engines context. Define the term Cloaking based on search engines context (1) and what does it involve? (1) 12] 2. 13] 4. What is the function of "indexer" which is part of the Google search engine? [2] 5. What are the differences between print (books) sources and Internet sources (World Wide Web) in terms of quality controls? Mention three of each [6]